Is this correct usage of perfect infinitive?

My question comes from this Present perfect VS infinitive verb, where they explained that the sentence

He became the first 16 year old to have scored a goal for his country

is grammatically incorrect and you should use

He became the first 16 year old to score a goal for his country

instead. But lately I came across this article https://simple.wikipedia.org/wiki/Brian_Shaw_(strongman), which included this sentence:

In 2011, he became the first man to have won the Arnold Strongman Classic and the World’s Strongest Man contest in the same calendar year

I guess it might be correct, because I consider this site as a respectful source with very low chance of grammar mistakes. What’s the difference between two "have" usages and why the first case is not correct, while the second (at a great chance) is?